SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Santos,Hersília de Andrade e; Viana,Edna Maria de Faria; Pompeu,Paulo Santos; Martinez,Carlos Barreira.

The swimming ability of neotropical fish species is an important aspect for fish ladder designs. Especially in Latin America, where fish ladders are highly selective, fish strategies to negotiate the passage should be studied focusing on target species. This paper shows the swimming ability of three neotropical species (Leporinus reinhardti, Pimelodus maculatus and Prochilodus costatus), from São Francisco river basin. Respirometer was employed for data collection. Regarding the critical and prolonged speeds, L. reinhardti was the fastest among the three neotropical species in relative values (body length/second). The performance of neotropical species was better when compared to critical and maximum prolonged speeds of fish species from temperate areas....

Evaluation of techniques used to protect tailrace fishes during turbine maneuvers at Três Marias Dam, Brazil

Palavras-chave: Fish ladders; Leporinus reinhardti; Pimelodus maculatus; Prochilodus costatus; Swimming ability.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400013

Andrade,Francisco de; Prado,Ivo Gavião; Loures,Raquel Coelho; Godinho,Alexandre Lima.

Turbine dewatering and stop/startup may lead to the death of tons of fish at Brazilian power dams. The Três Marias Dam (TMD) on the São Francisco River has adopted two techniques to reduce the quantity of fish, mostly mandi (Pimelodus maculatus, Pimelodidae), affected by these maneuvers. They are: (i) spill before turbine dewatering to attract fish out of the tailrace, and (ii) fish screens in the stop log slots during turbine stop/startup to prevent fish from entering the draft tube. Here, we investigated whether spill and fish screens reduced the quantity of fish affected by turbine dewatering and stop/startup at TMD. We also determined whether the biomass of mandi trapped during turbine dewatering may be predicted by turbine discharge (Q) and/or catch...

Reynolds shear-stress and velocity: positive biological response of neotropical fishes to hydraulic parameters in a vertical slot fishway

Palavras-chave: Fish kill; Fish screen; Pimelodus maculatus; Turbine dewatering; Turbine stop/startup.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400005

Duarte,Bernardo Alan de Freitas; Ramos,Isabella Cristina Resende; Santos,Hersília de Andrade e.

The barriers created by dams can cause negative impacts to aquatic communities, and migratory fish species are directly affected. Fishways have been developed to allow the upstream passage of fishes through dams. In Brazil, after the implementation of environmental laws, these structures have been built based on European and American fishway designs. Studies have shown selectivity for different neotropical fishes in some Brazilian fishways, and the main challenge has been to promote upstream passage of a large number of diverse fish species. The patterns of flow circulation within the fish ladder may explain fish selectivity although few studies detail the fish response to hydraulic characteristics of fish ladder flow. This paper presents a laboratory...

Evaluation of fish passage through the Igarapé Dam fish ladder (rio Paraopeba, Brazil), using marking and recapture

Palavras-chave: Leporinus reinhardti; Neotropical fish; Pimelodus maculatus; Velocity; Vertical slot.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400014

Alves,Carlos Bernardo Mascarenhas.

Rio Paraopeba, a tributary of rio São Francisco, has a six-meter high dam, built in 1978 to divert water to the Igarapé Thermal Power Plant. In 1994, a fish ladder was built at this dam. The results of a marking and recapture program carried out along rio Paraopeba between 1997 and 2001 are described, using information from fish community studies conducted at ten sampling stations between 1994 and 1997. These investigations showed the presence of at least 91 species in the river. During four rainy seasons between 1997 and 2000, fish were caught downstream of the dam, marked with external plastic tags, and immediately released at the same site. The objective was to evaluate fish passage through the ladder, based on recapture information from artisanal and...

Tipo: Info:eu-repo/semantics/report

Palavras-chave: Rio São Francisco basin; Migration; Prochilodus costatus; Leporinus obtusidens; Pimelodus maculatus.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000200019

Larvicultura do Mandi-amarelo Pimelodus maculatus Lacépède, 1803 (Siluriformes: Pimelodidae) em Diferentes Densidades de Estocagem nos Primeiros Dias de Vida

R. Bras. Zootec.

Luz,Ronald Kennedy; Zaniboni Filho,Evoy.

Este trabalho foi realizado na Estação de Piscicultura de São Carlos (EPISCar), São Carlos, SC. O efeito da densidade de estocagem de Pimelodus maculatus na larvicultura foi avaliado em pós-larvas alimentadas diariamente com zooplâncton selvagem na proporção de 300 organismos/pós-larva/dia e submetidas aos seguintes tratamentos: T1 - 5 pós-larvas/litro; T2 - 15 pós-larvas/litro; T3 - 30 pós-larvas/litro. No terceiro e quinto dias de experimento, foi avaliada a taxa de sobrevivência. Decorridos três dias de experimento, não foi observada influência da densidade na sobrevivência, embora, no quinto dia de experimento, houvesse maior sobrevivência na menor densidade testada, com valores médios de sobrevivência final de T1 (35,6%), T2 (28,9%) e T3 (20,6%). Os...

Reproductive traits of the yellow-mandi catfish Pimelodus maculatus Lacépède (Osteichthyes, Siluriformes) in captive breeding

Palavras-chave: Densidade de estocagem; Larvicultura; Mandi-amarelo; Pimelodus maculatus; Pós-larva.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982002000300004

Zoologia

Sato,Yoshimi; Fenerich-Verani,Nelsy; Verani,José Roberto; Godinho,Hugo Pereira; Sampaio,Edson Vieira.

Pimelodus maculatus Lacepede, 1803 is an important fish of the Säo Francisco river basin, where it is economically significant in both professional and sports fisheries. The fish, maintained in captivity, was subjected to hypophysation with crude caip pituitary extract. Approximately 70% of the females treated spawned viable eggs. The eggs were opaque, demersal, yellow and free. Egg stripping was performed at 213 hour-degrees (duration = 8.3 h) after the second dose injection, at water temperature of 25-26ºC. Hatching occurred at 394 hour-degrees (duration = 16.3 h) after egg fertilization, at water temperature of 24-25ºC. Egg fertilization rate was 64.8%. The relationship between absolute fecundity (AF), initial fertility (IF) and final fertility (FF) and...

Neoechinorhynchus pimelodi sp.n. (Eoacanthocephala, Neoechinorhynchidae) parasitizing Pimelodus maculatus Lacépède, "mandi-amarelo" (Siluroidei, Pimelodidae) from the basin of the São Francisco river, Três Marias, Minas Gerais, Brazil

Palavras-chave: Siluriformes; Pimelodus maculatus; Yellow-mandi catfish; Reproduction.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400006

Zoologia

Brasil-Sato,Marília de Carvalho; Pavanelli,Gilberto Cezar.

Neoechinorhynchus pimelodi sp.n. is described as the first record of Acanthocephala in Pimelodus maculatus Lacépède. 1803, collected in the São Francisco river, Três Marias, Minas Gerais. The new species is distinguished from other of the genus by the three circles of hooks of different sizes, and by the eggs measurements. The hooks measuring 100-1 12 (105), 32-40 (36) and 20-27 (23) in length in the males and 102-142 (129), 34-55 (47) and 27-35 (29) in length in the females for the anterior, middle and posterior circles. The eggs measuring 15-22 (18) in length and 12-15 (14) in width, with concentric layers of texture smooth, enveloping the acanthor.

Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato & Pavanelli (Eoacanthocephala, Neoechinorhynchidae) of Pimelodus maculatus Lacépède (Siluroidei, Pimelodidae) of the São Francisco River, Brazil

Palavras-chave: Acanthocephala; Neoechinorhynchidae; Neoechinorhynchus pimelodi sp.n.; Pimelodus maculatus; São Francisco river; Brazil.

Ano: 1998

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000400019

Zoologia

Brasil-Sato,Marília de C.; Pavanelli,Gilberto C..

Ecological and reproductive aspects of Neoechinorhynchus pimelodi Brasil-Sato & Pavanelli, 1998, in Pimelodus maculatus Lacépède, 1803 collected in the São Francisco river during periods of drought (July 1995 and 1996) and floodings (January 1996 and 1997) of this river basin are provided. In tropical regions where the amount of rainfall alters the hydrological regimen of limnological systems water temperature has not had an important role in infections of N. pimelodi in P. maculatus. Prevalence was somewhat higher during drought periods. Intensity of infection varied slightly between collecting periods. Mature male and female acanthocephalans were present in all periods. Females were predominant. Mature females were present in higher numbers...

Utilização de diferentes dietas na primeira alimentação do mandi-amarelo (Pimelodus maculatus, Lacépéde)

Palavras-chave: Acanthocephala; Neoechinorhynchus pimelodi; Pimelodus maculatus; Ecology; Reproduction.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100002

Luz, Ronald Kennedy; UFSC; Zaniboni-Filho, Evoy; UFSC.

Um dos maiores problemas enfrentados na larvicultura de espécies nativas está relacionado à primeira alimentação e à ocorrência de canibalismo para algumas espécies desde o início da vida. Este experimento teve como objetivo avaliar diferentes dietas na primeira alimentação do Pimelodus maculatus. As pós-larvas foram estocadas a uma densidade de 15 pós-larvas/L, em cubas de três litros com sistema de aeração contínua. Os tratamentos utilizados foram: alimentação composta de zooplâncton silvestre nas proporções de 300 organismos/pós-larva/dia (T1); 600 organismos/pós-larva/dia (T2); 900 organismos/pós-larva/dia (T3); 9 náuplios de Artemia/pós-larva/dia (T4); e ração granulada entre 150 e 250 µm (> 50% PB) (T5). Ao final de cinco dias de experimento, o...

Palavras-chave: 2.00.00.00-6 Ciências Biológicas alimentação inicial; Mandi-amarelo; Pimelodus maculatus; Pós-larva de peixes 2.00.00.00-6 Ciências Biológicas.

Ano: 2001

URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2704

Induced CYP1A activity and DNA damage in fish from the middle Paraíba do Sul River basin, southeastern Brazil

Morado, Claudio Nona; Martins, Thiago Estevan Parente; Araujo, Francisco Gerson; Paumgarten, Francisco José Roma; Gomes, Iracema David.

The Paraíba do Sul River (PSR) drainage basin in Southeastern Brazil covers one of the most industrialized and densely populated regions of the country. The impact of chemical contamination on the PSR basin seems to be more pronounced in its middle reach where a number of potentially polluting plants are located. In this study, we used hepatic EROD activity - a biomarker of exposure to CYP1A-inducing pollutants (e.g. PAHs, PCDD/Fs, PCBs) - and the incidence of micronucleated erythrocytes (Mn) in the peripheral blood - a biomarker of effects of DNA-damaging agents (e.g. PAHs) - to evaluate the effects of pollution on two native fish species, Geophagus brasiliensis and Pimelodus maculatus. Results showed that the incidence of Mn and EROD in G. brasiliensis...

Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil - DOI: 10.4025/actascibiolsci.v29i1.159

Palavras-chave: Ecologia aplicada Ethoxyresorufin-O-deethylase (EROD) activity; Geophagus brasiliensis; Micronuclei; Pimelodus maculatus; Polycyclic aromatic hydrocarbons (PAHs). Monitoramento ambiental usando peixes.

Ano: 2018

URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36666

Bachmann, Fernanda; FURB; Greinert, Juliane Araújo; FURB; Bertelli, Pedro Wilson; FURB; Silva Filho, Hercílio Higino da; FURB; Lara, Natália Oliveira Totti de; FURB; Ghiraldelli, Luciana; UFSC; Martins, Maurício Laterça; UFSC.

Pouco se conhece sobre a parasitofauna de peixes de água doce no Estado de Santa Catarina. Espécimes de mandi, Pimelodus maculatus foram coletados no rio Itajaí-Açu, Blumenau, Estado de Santa Catarina, entre março e dezembro de 2005, para anáise parasitolóica. De 82 peixes analisados, todos apresentaram pelo menos uma espécie de parasito. Durante as amostragens foram medidos o pH, o oxigênio dissolvido, a condutividade elérica e a temperatura da água, bem como a temperatura ambiente e as condições do tempo nos dois dias que precederam a coleta. Os maiores valores de prevalêcia e intensidade média de infecção foram observados por Monogenoidea (96,3%; 100,23), seguido por Henneguya sp. (63,4%), Procamallanus (Spirocamallanus) pimelodus (51,2%; 3,02),...

Palavras-chave: 2.13.00.00-3 Parasitologia parasitas; Peixe; Pimelodidae; Pimelodus maculatus; Itajaí-Açu; Santa Catarina.

Ano: 2007

URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/159

O grau de preferência alimentar: um método qualitativo e quantitativo para o estudo do conteúdo estomacal de peixes

Braga, Francisco Manoel de Souza; UNESP - Rio Claro.

O método grau de preferência alimentar descreve a alimentação de peixes usando uma simples descrição e computação das preferências alimentares. Esse método é usado quando os valores volumétricos e/ou numéricos para os conteúdos estomacais não são viáveis.

Palavras-chave: 2.00.00.00-6 Ciências Biológicas alimentação; Pimelodus maculatus; Plagioscion squamosissimus; Metodologia 2.00.00.00-6 Ciências Biológicas.

Ano: 1999

URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4445

Diet and resource sharing by two Pimelodidae species in a Southeastern Brazilian reservoir

Biota Neotropica

Silva,Zoraia; Nascimento,Patrícia Elaine Cunha do; Vitule,Jean Ricardo Simões; Frehse,Fabrício de Andrade; Ferraz,Mayara Silva Oliveira; Mourgués-Schurter,Lea Rosa.

Abstract: Fish can vary their diet and feeding dynamics according to biotic and abiotic factors. There is insufficient knowledge regarding these factors in reservoirs, which limits the management of these areas. The aim of this study was to determine the diet of two related and most collected fish species, verify the influence of biotic and abiotic factors on their diet, and also verify the existence of resource sharing by them in an upstream Brazilian reservoir. Fish abundance in the reservoir was calculated and data were provided by 176 specimens of Iheringichthys labrosus (Lütken, 1874) and 255 specimens of Pimelodus maculatus Lacépède, 1803 collected in Camargos reservoir, MG, Brazil. Stomach contents were analysed through the frequency of occurrence...

Genetic variability in four fish species (Pimelodus maculatus, Prochilodus lineatus, Salminus brasiliensis and Steindachneridion scripta) from Uruguay River basin

Palavras-chave: Feeding ecology; Iheringichthys labrosus; Pimelodus maculatus; Rio Grande Basin; Upstream reservoir.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300205

BABT

Ramella,Micheline Sandra; Kroth,Mariela Aparecida; Meurer,Samira; Nuñer,Alex Pires de Oliveira; Zaniboni Filho,Evoy; Arisi,Ana Carolina Maisonnave.

The genetic variability of four fish species (Pimelodus maculatus, Prochilodus lineatus, Salminus brasiliensis and Steindachneridion scripta) collected in the upper Uruguay River basin was analyzed using the RAPD technique. A total of 118 amplified fragments was obtained, 11 for P. maculatus, 29 for P. lineatus, 45 for S. brasiliensis and 33 for S. scripta. Amplified fragments with monomorphic profile were not found in the studied species, except for S. brasiliensis, which presented seven monomorphic bands for Saltinho population. All species showed high levels of genetic variability among individuals.

Gram-negative intestinal indigenous microbiota from two Siluriform fishes in a tropical reservoir

Palavras-chave: RAPD; Pimelodus maculatus; Prochilodus lineatus; Salminus brasiliensis; Steindachneridion scripta.

Ano: 2006

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500008

BJM

Duarte,Silvana; Silva,Flávia Cristina de Paula e; Zauli,Danielle Alves Gomes; Nicoli,Jacques Robert; Araújo,Francisco Gerson.

The Gram-negative intestinal microbiota of Hypostomus auroguttatus and Pimelodus maculatus, a detritivorous and an omnivorous fish species, respectively, were compared between fishes from the reservoir and the stretch of the river below the dam of the Funil hydroelectric plant, Rio de Janeiro, Brazil. Four selective culture media were used under aerobic and two under anaerobic conditions. The omnivorous species had microbiota with higher population levels compared to the detritivorous species. The number of morphotypes and population levels of total bacteria, vibrio and Bacteroides tended to be higher in summer and autumn in the reservoir, and not different in the river. The number of morphotypes of enterobacteria and total bacteria were higher in the...

DESCRIÇÃO DE Cucullanus patoi sp. n. (NEMATODA, CUCULLANIDAE) DE PINTADO Pimelodus maculatus LACÉPEDE, 1803 (PISCES), DO LAGO DO GUAÍBA, RS, BRASIL

Palavras-chave: Alimentary regimen; Environment; Gut microbiology; Hypostomus auroguttatus; Pimelodus maculatus.

Ano: 2014

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400019

Ciência Rural

Fortes,Elinor; Hoffmann,Rita Pato; Sarmento,Telma Maria.

Uma nova espécie de nematódeo, Cucullanus patoi sp. n. é descrita no intestino do pintado (Pimelodus maculatus) do Lago do Guaíba, RS.